fa تأثیر سیلیسیم بر ویژگی‌های کیفی و بیوشیمیایی گل رُز بریدنی در شرایط تنش آبی پژوهشي Research <p dir="RTL" style="text-align: justify;"><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">سیلیسیم یکی از عناصر مفید در رشد گیاهان بوده و اثرهای مثبت آن در مقاومت به تنش</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">های</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">غیر</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">زیستی،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">از</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">جمله</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شوری</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">و</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">خشکی،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">در</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">برخی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">مطالعات</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">به</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">اثبات</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">رسیده</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">است</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">. </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">پژوهش</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">حاضر</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">با</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">هدف</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">ارزیابی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">اثرهای</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">سیلیسیم</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">و</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تنش</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">آبی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">بر</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">صفات</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کیفی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">و</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">بیوشیمیایی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">گل</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">رُز</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">بریدنی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">رقم</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کلاب</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">نیکا،</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;"> با سه غلظت سیلیکات پتاسیم (صفر، 5/0 و 1 میلی&rlm;مولار) و سه سطح تنش آبی (100 (شاهد)، 75 و 50% نیاز آبی گیاه) به&rlm;صورت آزمایش فاکتوریل، در قالب طرح بلوک</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">های</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کامل</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تصادفی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">با</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">چهار</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تکرار،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">در</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شرایط</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">گلخانه</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">انجام</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شد</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">. </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">در</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">این</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">پژوهش،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شاخص‌های</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کیفی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">همچون</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تعداد</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شاخه‌های</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;"> ممتاز، قطر شاخه و قطر گل و همچنین پارامترهای بیوشیمیایی نظیر محتوای کلروفیل و پرولین برگ‌ها </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">اندازه&rlm;گیری</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شدند</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">. </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">نتایج</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">نشان</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">داد</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">که</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">گیاهان</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">پرورش</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">یافته</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">در</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تیمار</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">آبیاری</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;"> 100%</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">قطر</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شاخه،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تعداد</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شاخه</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">های</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">ممتاز،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">وزن</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تر</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">و</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">خشک</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شاخه</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">گل</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">دهنده،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">قطر</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">گل،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">سطح</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">برگ</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">و</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">محتوای</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">نس</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">بی آب بیشتری نسبت به گیاهان واقع در شرایط تنش آبی داشتند. زمان لازم برای جوانه</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">زنی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">جوانه&rlm;ها</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">در</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تیمار</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;"> 100% </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">نیاز</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">آبی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">در</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">مقایسه</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">با</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">گیاهان</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تحت</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شرایط</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تنش،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">سریع</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تر</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;"> (</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">حدود</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;"> 83/6 </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">روز</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">) </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">اتفاق</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">افتاد</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">. </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">این</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">در</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">حالی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">است</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">که</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تیمارهای</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تنش</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">آبی</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;"> (50 </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">و</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;"> 75 </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">درصد</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">نیاز</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">آبی</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">) </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تأثیر</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">معن</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">ی</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">داری</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">بر</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تعداد</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کل</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شاخه‌های</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">برداشت</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شده،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">محتوای</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کلروفیل</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">و</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">میزان</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">پرولین</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">برگ‌ها</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">نشان</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">ندادند</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">. </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">در</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">این</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">پژوهش،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">اگرچه</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کاربرد</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">سیلیکات</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">پتاسیم</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">در</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">غلظت</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">یک</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">میلی&rlm;مولار</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">توانست</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">بیشتر</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">صفات</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کیفی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">رُزهای</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شاخه</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">بریدنی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">را</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">بهبود</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">بخشد،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">این</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تفاوت</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">از</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">لحاظ</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">آماری</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">معنی</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">دار</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;"> نبود. به نظر می</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">رسد</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">که</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">عدم</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">معنی</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">داری</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تیمارهای</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">سیلیسیمی،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">مرتبط</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">با</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">نحوه</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">توزیع</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">سیلیسیم</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">در</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">برگ‌ها</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">و</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">عدم</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کارایی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">این</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تیمارها</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">بر</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تعرق</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کوتیکولی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">و</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">هدایت</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">روزنه</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">ای</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">باشد</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">. </span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">به‌طور</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کلی،</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">نتایج</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">بیانگر</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">این</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">واقعیت</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">است</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">که</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">فرایند</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">سازگاری</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">رُزهای</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">شاخه</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">بریدنی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">به</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">تنش</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">آبی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">از</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">طریق</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">م</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کانیزم</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">های</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">مورفولوژیک</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">اتفاق</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">افتاده</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">و</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">فرایند</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: times new roman;">‌</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">های</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">اسمزی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">نظیر</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">سنتز</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">اسید</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">آمینه</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">پرولین</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">و</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">کاربرد</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">سیلیسیم</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">دخالتی</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">نخواهند</span></span></strong> <strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">داشت</span></span></strong><strong><span style="font-size: 11pt;"><span style="font-family: b lotus;">.</span></span></strong></p> <p dir="RTL" style="text-align: justify;"></p> <hr> <p style="text-align: justify;">Silicon (Si) is a beneficial element for on plant growth and development that plays an important role in plant resistance to environmental stresses such as salinity and drought. The present research was conducted to study the effect of Si and water deficit on biochemical, physio-morphological and qualitative traits of cut rose cv. Club-Nika under greenhouse conditions. The factorial experiment had three levels of Si (0, 0.5 and 1 mM) and three levels of water deficit (100 (control), 75 and 50% of the irrigation needs), combined in a completely randomized blocks design with four replications. In the current research, qualitative attributes such as number of extra-quality stems, shoot diameter, flower diameter and biochemical traits such as chlorophyll and proline content of leaves were measured. Results showed that plants grown in the 100% water-requirement treatment had higher shoot diameter, number of extra-quality stems, fresh and dry weights of flowering shoot, flower diameter, leaf area and relative water content than the plants exposed to water stress conditions. Bud sprouting in the100% water requirement treatment happened faster (about 6.83 days) than the plants under stress conditions. However, water stress treatments (50 and 75 percent) did not affect total number of stems, chlorophyll content and proline content of the leaves. In this research, although addition of 1 mM Si was capable of enhancing most qualitative traits of cut roses, however, this difference was not statistically significant. It seems that lack of effect of silicon treatments might be related to characteristics of silicon distribution in the leaves and also ineffectiveness of these treatments on cuticular transpiration and stomatal conduction. Generally, the results showed that cut roses adapted themselves through&nbsp;changes in morphological characteristics and not any other mechanisms like osmoregulation such as&nbsp;proline synthesis.</p> <p style="text-align: justify;"></p> رُز بریدنی, کشت بدون خاک, پرولین, فرایند سازگاری Cut rose, Soilless culture, Proline, Adaptation process. 1 12 http://jspi.iut.ac.ir/browse.php?a_code=A-10-913-4&slc_lang=fa&sid=1 Ali Dolatkhahi علی دولتخواهی dolatkhahi11@gmail.com No Dept. of Hort. Sci. and Landscape Eng., College of Agric., Ferdowsi University of Mashhad, Mashhad, Iran. گروه علوم باغبانی و مهندسی فضای سبز، دانشکده کشاورزی، دانشگاه فردوسی مشهد M. Shoor محمود شور shoor@um.ac.ir Yes Dept. of Hort. Sci. and Landscape Eng., College of Agric., Ferdowsi University of Mashhad, Mashhad, Iran. گروه علوم باغبانی و مهندسی فضای سبز، دانشکده کشاورزی، دانشگاه فردوسی مشهد M. Bannayan محمد بنایان اول No Dept. of Agron. and Plant Breed., College of Agric., Ferdowsi University of Mashhad, Mashhad, Iran. گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه فردوسی مشهد A. Tehranifar علی تهرانی فر No Dept. of Hort. Sci. and Landscape Eng., College of Agric., Ferdowsi University of Mashhad, Mashhad, Iran. گروه علوم باغبانی و مهندسی فضای سبز، دانشکده کشاورزی، دانشگاه فردوسی مشهد A. Alizadeh امین علیزاده No Dept. of Water Eng., College of Agric., Ferdowsi University of Mashhad, Mashhad, Iran. گروه مهندسی آب، دانشکده کشاورزی، دانشگاه فردوسی مشهد